Specifies the minimum amount of time that must elapse between background fetch operations.
- iOS 7.0–13.0Deprecated
- tvOS 11.0–13.0Deprecated
The minimum number of seconds that must elapse before another background fetch can be initiated. This value is advisory only and does not indicate the exact amount of time expected between fetch operations.
This property has no effect for apps that do not have the
UIBackground key with the
fetch value in its
The default fetch interval for apps is
background. Therefore, you must call this method and set a fetch interval before your app is given background execution time.